Patents by Inventor Hirotake Ishigami

Hirotake Ishigami has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9542606
    Abstract: In a lane line recognition apparatus, an abnormality determiner is configured to determine whether or not a width of a travel lane defined by left-side and right-side lane lines is abnormal, and a lane-line recognizer is configured to, when the width of the travel lane is not abnormal, recognize both of the left-side and right-side lane lines in a both-side line recognition mode, and when the width of the travel lane is abnormal, recognize one of the lane lines in a one-side line recognition mode. In the one-side line recognition mode, the lane-line recognizer is configured to, for each of the left-side and right-side lane lines, calculate two or more parameters of the lane line, and then integrate recognition results for the respective two or more parameters, and based on the integrated recognition results of the left-side and right-side lane lines, select one of the lane lines to be recognized.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: January 10, 2017
    Assignee: DENSO CORPORATION
    Inventors: Hirotake Ishigami, Naoki Kawasaki, Syunya Kumano, Shunsuke Suzuki, Satoshi Osanai, Tetsuya Takafuji
  • Publication number: 20160217583
    Abstract: An object detection apparatus includes a camera and an ECU. The camera is mounted to a vehicle and captures an image. The ECU is configured to obtain a depth distance for each pixel area of the image based on the image; extract at least one potential object based on the depth distance; calculate an amount of change over time in the depth distance of the at least one potential object; and detect an object around the vehicle from among the at least one potential object using the amount of change over time. When a first potential object and a second potential object that are adjacent in the image are extracted, and a second amount of change over time is twice a first amount of change over time, the second potential object is determined to be the same object as the first potential object.
    Type: Application
    Filed: January 21, 2016
    Publication date: July 28, 2016
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Naohide Uchida, Noriaki Shirai, Hirotake Ishigami
  • Publication number: 20160203376
    Abstract: An object estimation apparatus estimates a position and a speed of an object in images based on the images taken by an image taking means from different positions.
    Type: Application
    Filed: August 20, 2014
    Publication date: July 14, 2016
    Applicants: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hirotake Ishigami, Noriaki Shirai, Toshiyuki Matsubara
  • Patent number: 9361668
    Abstract: There is provided an apparatus for generating a disparity map. According to the apparatus, an image acquisition section acquires a right-camera image and a left-camera image which are picked up from mutually different viewpoints by cameras. A disparity map generation section generates a disparity map that includes disparity expressed in terms of a difference in pixel positions between each of pixels and a corresponding one of pixels in the right-camera image and the left-camera image, respectively, as acquired. A weight determination section determines a weight that serves as a degree of contribution to disparity correction, for each of weight-calculation-target pixels composed of surrounding pixels. The weight-calculation-target pixels include a correction-target pixel or surrounding pixels that are present around the correction-target pixel in the disparity map. A disparity map correction section corrects the disparity of the correction-target pixel, using weighted average based on the determined weight.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: June 7, 2016
    Assignees: DENSO CORPORATION, NIPPON SOKEN, INC., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hirotake Ishigami, Noriaki Shirai, Masayuki Imanishi, Yoshinao Takemae
  • Publication number: 20160140401
    Abstract: A road surface information acquisition apparatus a lane line recognizer configured to, based on a road surface image of a carpool lane forward of a vehicle acquired by a camera, recognize lane lines of the carpool lane. The apparatus further includes a determiner configured to, based on a lane partition line recognized by the lane line recognizer, determine a start point and an end point of the entrance and exit, and a lane-width calculator configured to, based on the lane lines recognized by the lane line recognizer, calculate a lane width of the carpool lane. The apparatus further includes a lane-width corrector configured to, based on determinations made by the determiner, correct the lane width calculated by the lane-width calculator. Based on a broken line as the lane partition line, the determiner determines the start point and the end point of the entrance and exit of the carpool lane.
    Type: Application
    Filed: June 25, 2014
    Publication date: May 19, 2016
    Inventors: Hirotake Ishigami, Naoki Kawasaki, Syunya Kumano, Shunsuke Suzuki
  • Publication number: 20150248588
    Abstract: In a lane line recognition apparatus, an abnormality determiner is configured to determine whether or not a width of a travel lane defined by left-side and right-side lane lines is abnormal, and a lane-line recognizer is configured to, when the width of the travel lane is not abnormal, recognize both of the left-side and right-side lane lines in a both-side line recognition mode, and when the width of the travel lane is abnormal, recognize one of the lane lines in a one-side line recognition mode. In the one-side line recognition mode, the lane-line recognizer is configured to, for each of the left-side and right-side lane lines, calculate two or more parameters of the lane line, and then integrate recognition results for the respective two or more parameters, and based on the integrated recognition results of the left-side and right-side lane lines, select one of the lane lines to be recognized.
    Type: Application
    Filed: March 2, 2015
    Publication date: September 3, 2015
    Inventors: HIROTAKE ISHIGAMI, NAOKI KAWASAKI, SYUNYA KUMANO, SHUNSUKE SUZUKI, SATOSHI OSANAI, TETSUYA TAKAFUJI
  • Publication number: 20150228057
    Abstract: There is provided an apparatus for generating a disparity map. According to the apparatus, an image acquisition section acquires a right-camera image and a left-camera image which are picked up from mutually different viewpoints by cameras. A disparity map generation section generates a disparity map that includes disparity expressed in terms of a difference in pixel positions between each of pixels and a corresponding one of pixels in the right-camera image and the left-camera image, respectively, as acquired. A weight determination section determines a weight that serves as a degree of contribution to disparity correction, for each of weight-calculation-target pixels composed of surrounding pixels. The weight-calculation-target pixels include a correction-target pixel or surrounding pixels that are present around the correction-target pixel in the disparity map. A disparity map correction section corrects the disparity of the correction-target pixel, using weighted average based on the determined weight.
    Type: Application
    Filed: August 20, 2013
    Publication date: August 13, 2015
    Inventors: Hirotake Ishigami, Noriaki Shirai, Masayuki Imanishi, Yoshinao Takamae